Heat-controlling alarm mechanism



P. A.ROTH.

HEAT CONTROLLING ALARM MECHANISM.

APPLICATION FILED DEC. 27. I9I5.

Patented May 13, 1919.

2 SHEETS-SHEET I.

(litomq P. A. ROTH.

HEAL CONTROLLING ALARM MECHANIS APPLlCATiON FILED DEC- 27, I915.

Patented May 13, 1919;

2 SHEETS-SHEET 2.

i L 1: 1| L W 0 55 tions 4, each of which is adapted to engage PHILIP A. ROTH, 0F MILWAUKEE, WISCONSIN.

HEAT-CONTROLLING ALARM MECHAIT ISM.

Specification of Letters Patent.

Patented May 13, 1919.

Application filed. December 27, 1915. Serial No. 68,941.

To all whom it may concern:

Be it known that I, PHILIP A. Born, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Heat-Controlling Alarm Mechanism, of which the following is a specification.

My invention relates to improvements in clock controlled draft mechanism for heating purposes. p

The object of my invention is to provide improved means for utilizing an alarm clock to adjust the dampers of a furnace or other heater simultaneously with the sounding of an alarm, whereby the occupants of a dwelling are awakened- My invention contemplates connecting an alarm clock with the draft and check dampers of a heater in such a manner that the spring or other mechanism, which actuates the clapper of the alarm bell, will also transmit motion to a trip lever and thereby release weight operated mechanism or equivalent means for adjusting the dampers.

In the drawings Figure 1 is an elevation of a heating furnace having its dampers controlled by clock.

mechanism, all constructed in accordance with my invention, the ground floor of the building being illustrated in section.

Fig. 2 is an elevation of the controlling board with the clock removed, the arbor of the winding shaft of the alarm mechanism being illustrated in cross section.

Figs. 3 and 4 are views similar to Figs. 1 and 2 respectively, showing a modified form of construction, which will, in most cases, be preferred.

Like parts are identified by the same reference characters in both views.

The heater A may be of any ordinary type. The drawings illustrate a hot air. furnace with the pipes for deliverin the hot air to the various rooms of a bui ding removed. B is a damperfor controlling the admission of air, and C is a check damper located in the smoke pipe D. E is an alarm clock. All of these parts may be of any ordinary construction.

It will be observed, however, that the alarm clock is mounted upon a controlling board 1. This board is provided with a trip lever 2 and the arbor 3 of the alarm winding mechanism carries one or more cam projecand lift the trip lever 2 once during each revolution of the arbor 3. The front draft damper B is provided with a chain 6 which extends around pulleys? and 8, and is provided with a ring 9 at its upper end, whereby the draft damper B maybe raised or lowered at pleasure. When lowered, the mug rests upon a stop 10 and when raised it may be hooked over a projection 11 on the controlling board 1.

The check damper G is suitably weighted,

preferably by means of a suspended weight 15. Thechain 16 connects this weight with the damper and extends upwardly over pulleys 17 and 18 and is connected with the chain 6 at 19. Another chain 20 is connected with chain 16 at 21 and extends around a pulley 22 and upwardly to the controlling board, where it is provided with a ring 23 adapted, when this chain is lowered, to engage a stop 24. When the chain 20 is raised, it opens the check damper C, lifting the weight 15 and allowing draft damper B to close, and when this chain 20 is lowered with ring 23 in contact with stop 24, weight 15 closes check damper C and pulls upwardly on the lower portion of chain 6, thereby opening the damper B. The upper portion of chain .6 with ring 9 is of course used only when it is desired to efi'ect an independent adjustment of the draft damper B.

When chain 20 is raised, ring 23 at its upper end may be secured to a stationary hook 30 on the controlling board, but when it is desired to employ the clock mechanism to automatically control an adjustment of the dampers in order to start the fire, ring 23 is hooked over one arm 31 of a lever which is pivoted to the controlling board at 32, the other arm of this lever being connected by a link 35 with trip controlled lever 36. The latter is pivoted to the controlling board at 37, and its upper end is adapted to engage in an open notch 38 formed in the under surface of the cam actuated trip lever 2. With this arrangement itis obvious that when the alarm is sounded, the rotation of the arbor 3 will bring one of the cams 4 into engagement with trip lever 2, thereby lifting it slightly. The outer side wall of the notch 38 is beveled so that lever 36 is easily released. When released, the upper end of this lever 36 is free to swing downwardly under the pull exerted by weight 15 through chains 16 and check damper 0, thereby preventing the admission of fresh air to the smoke pipe The downward movement of weight 15 is also transmitted through weight 15 to th -pulling it to the position indicated by dotlower portion of chain 6 and through the latter to the damper B, which is thereby drawn upwardly to open position, thereby admitting fresh air to the ash pit or lower part of the heater underneath the fire pot.

Combustion in the heater A will of course be accelerated when the front draft is open and the back or check damper closed, but the alarm having been simultaneously sounded, the occupants of the building will be awakened and will subsequently re-adjust the dampers manually in accordance with requirements. I

- By providing means for utilizing the alarm sounding mechanism rto'actuate the trip releasing member or cam, it is obvious that a change in the adjustment of the alarm'whereby the latter is sounded at a different time of day or night, will also'correspondingly change the time for the adjustment of the automatic damper mechanism, whereby the fire is started in the heater. I attach considerable importance to this feature, since it relieves the clock mechanism of any additional duty over that required for sounding the alarm and it also changes the time of damper adjustment to correspond with the change of the time when the occupants of the building are expected to arise. The ordinary alarm mechanism is driven by a spring which is wound up manually upon retiring for the night, and-the same arbor employed for winding the spring may be utilized to carry the eams which release the trip when the spring unwinds in operating the alarm. I have" not illustrated the alarm mechanism in detail, since the structure and mode of operation of such mechanism are well understood.

. Referring to Figs. 3 and 4, it will be observed that the construction is substantially the same as that in Figs. 1 and 2 except as follows: The 'shortarm of lever 36 is provided with an arm 50 which projects in the opposite direction from the link 35 and is provided with a hook 51 adapted to engage a ring 9 on the upper end of chain 6*. This chain passes around or. over pulleys 8 '7 7 and then directly to the draft door or damper B. Between the pulleys the chain 6 is provided with a weight 53, which tends to draw the chain downwardly between the pulleysv 7 7 the weight tending to hang almost directly downwardly from pulley 7 when chain 6 is connected with the lever arm 50, as shown in Fig. 3. But when the ring 9 is released from the lever arm, the chain drops, and this allows the weight to swing to the left. The ring engages an. eye bracket 56,

' with the trip mechanism.

which limits its downward movement, but allows sufiicient slack to permit the weight to draw effectively upon that portion of the chain which runs over pulley 7 This draws upwardly upon the draft damper,

ted lines in Fig. 3, but when the ring 9 is pulled upwardly and engaged with trip hook 51 the weight 53 is almost entirely supported by that portion of the chain which runs over pulley 7 and the draft damper is permitted to close by gravity.

In this modified construction, the chain 20 is unconnected with the chain 6 and no weight is necessary to close the check draft C. But when the trip lever 2 releases lever 36 with the parts in the position shown in Fig. 3, the lever 36 will swing downwardly to a position of release, tilting arms 50 and 31 to an angle at which the rings will slip off and allow the check draft to close and the draft damper to open as above explained. The dampers will then remain in that position until reset manually.

I claim 1. Time controlled heat regulating apparatus, including the combination with trip mechanism, of a downwardly closing draft damper, a releasable flexible connection between said damper and the trip mechanism, a set of pulleys over which said flexible connection passes, said pulleys being located substantially in the same horizontal plane, and a weight secured to said flexible connection between said pulleys :-one of said pulleys being located substantially above the damper, whereby when said flexible connection is released by the trip mechanism, the weight may swing to a position between such pulley and the damper to lift the latter to open position said connections being adapted to draw said weight to an ineffective position substantially underneath the other pulley, when said flexible connection is coiniected 2. Time controlled heat regulating apparatus, including the combination with a pivotally supported, substantially horizontally disposed trip lever, a damper actuating flexible connection adapted to engage one end 11 of said lever, and a pivotally supported time operated trip laitch having one end linked to said lever on the opposite side of its fulcrum from that engaged by said flexible connection.

3. Time controlled, heat regulating apparatus, including the combination with a pivotally supported, substantially horizontally disposed centrally pivoted trip lever, a damper actuating, flexible connection adapted to loosely engage one end of said lever, a pivotally supported, time operated trip latch having one end connected to said lever by a swinging link on the opposite side of its fulcrum from thatengaged'by said flexible connection, said trip latch being provided with an elbowed portion extending substantially horizontally therefrom, and a second damper actuating connection adapted to engage said elbowed portion.

4. Heat regulating apparatus, including the combination with check and draft dampers, each having independent flexible connections with a point of operation at a distance from the dampers, a flexible cross connection adapted to connect the draft damper and arranged to extend from each end thereof toward said distant point of operation,

topics of this patent may be obtained tor five cents each, by addressing the Washington, D. G.

with the check damper whereby, as the check damper is raised by its flexible connection, 15 the draft damper will be lowered, said draft damper connection being adapted to open its damper independently of any movement of the check damper.

In testimony whereof I aifix my signature 20 in the presence of two witnesses.

PHILIP A. ROTH.

Witnesses:

EDWARD W. H. Rnrss, WM. SCHUENGEL.

Commissioner of ratentl, 

